Chain and parts therefor



* Nov. 24,1925. 1,563,065

w. J. BELCHER CHAIN AND PARTS THEREFOR Filed Oct. 31, 1923 2 Sheets-Sheet 1 Y YMMV]? W. J. BELCHER CHAIN AND PARTS THEREFOR 2 Sheets-Sheet 2 Nov. 24 1925- a plural.

J. BERG "WARREN ll'ECTZGUT.

\ (El-IAIN AND PARTS Application filed. October 31,1923. Eerie]. 671,838.

To all whom fr; may. comam.

lle it known that 1, Unions J. BER/YER; a citizen of the United Stat s, residing: at Hartford, in the county of ,l-lartitord and lltate oit @onnecticut, have invented certain new and useful lmprov' in Ghains and. larts 'lhereitor, of u nich the following is a specification.

my invention relates to link chains of the silent type and consists oil certain novel parts and combinations of parts to render the chain more etlicient, durable and noiseless in operation, which novel parts and taimbinations will be specifically described herein and pointed out in the appended claims.

My invention will be better understood by reading the following: description taken in connection with the drawings showinr one embodimei'it thereof: and in which hi it is a side view of a portion of a chain coniningr one emlnnliment of my invention; ll in. 2 is an inwarted sectional view taken along; the plane of the line llll 0t F i) is a side view oi. a single lint; l

is a sectional elevation on scale larger tear the preceding figures illustrating: the positions assumed by the links oi? adjacent pitches and the pin passing through the openings therein on a straight run of the chain; llig. 5 is a view similar to Fig. t illustrating the joint betwee the two pitches in the tiered position and (3 is an en larged section through the pin members showing a portion of links.

hike characters indicae throughout the drawings.

.10 general outlineot the linlts is the same as that of links heretofore used for chains of this type. The chain comprises a plura y of inks I, placed side by side and Ky ()Ilf similar links 2 placed side by side and overlapping the links 1. The links are prorided at each end with an opei'iino through which the pin member is placed. ti l-re pin con'iprises three members 8, ll and "ll'iese members preferably have flat, parallel sides and rounded edges. The memhers 3 and are similar and preferably identical. The member 5 is thinner than the members 3 and l. It is well-known that chains of this type, after they have been in use "for a considerable period of time, become longer due to-the wear between the diilerent movable parts. in the structure illustrated like parts in the drawings, particular rctlerencc being made to Figure 4-, there are four contact pointrr a, 7), c and (Z, foreach lint: which 1* into tl e lengthening of the chaiin due to wear. ll ith a chain oi": any subs. .i'itial lei *h, I it will be understood that these po...1ts will be multiplied according to the length of the chain and the length oilf the pitches. v

lily invention includes the novel idea of a movable or replaceable wear plate for the purpose of taking up this slack which develops during the use of the chain. By reason of the simplicity in section of the members 3, and 5, each of these members ma be manufactured inexpensively by merely rolling; round stock of the proper size to the cross section shown. i rtter the chain has been in service for such period of time as to become lengthened to an objectionable deeree, this may be readily corrected by moving-3; the members 5 and replacing; them with similar members of somewhat greater cross section so that the wear will be compensated tor and the chain brought back to its original length. The increased thickness oi: the

'member 5 which is substituted for that mem her in the original chain, will depend, 01? course, upon the amount of wear which has taken place.

The tlat sides 6 and 7 of the members ;-l and l are ei'igaged by rounded surfaces 5% and 9 of the links 2 and 1, respectively, and the members 3, and 5 are pinched hetwcen the surfaces 8 and 9, by the load on the chain. Similar surfaces l.() and ll on the links 1 and 2, respectively, also engage the surfaces 6 and 7, but these contacts do not take any part in carrying the load of the chain but are placed on thelinks to reduce the initial backlash and to stren then the linlts. During the flexing: of the jointzo the member l and the middle engages the member 3, obviously the member 5 may WHITNEY.

all?

be bent the other Way. The members el an-rl 5 are held against longitudinal movement by the Washers 1".

V hile I have illustrated one form of my invention and have described the same in detail, I desire it to be understood that I am not to be limited to the exact arrange ment shown because the application of wear plate liming; the functions and seem While my invention is useful in connection with chains of all sizes, perhaps its greatestnsefnlness will be found in 601mm:-

tionwith chains of the larger sizes.

I claim: 1. In a chain of the link type, a pin 0on1- prislng two parallel members and a plain flat WGiLl plate between said members 2. In a chain of the linlptype, a pin plate being substantially fixed relative to each other.

4. In a chain of the link type, :l pin comprising two line members having i3e ztaingula r (moss section placed side bysirle and a. list Wear plate between said. members, said wean. plate being slightly beni from edge to edge to lend resiliency to the joint. I

In it chain of the link type, a pin comprising two members having rectangulair cross section place-(l side by side, ;i wear plate between said members, and curved. surfaces on the links engaging said pin members.

\VABREN J. BELCHER.

ill 

